name : describe-valid-db-instance-modifications.rst **To describe valid modifications for a DB instance** The following ``describe-valid-db-instance-modifications`` example retrieves details about the valid modifications for the specified DB instance. :: aws rds describe-valid-db-instance-modifications \ --db-instance-identifier test-instance Output:: { "ValidDBInstanceModificationsMessage": { "ValidProcessorFeatures": [], "Storage": [ { "StorageSize": [ { "Step": 1, "To": 20, "From": 20 }, { "Step": 1, "To": 6144, "From": 22 } ], "ProvisionedIops": [ { "Step": 1, "To": 0, "From": 0 } ], "IopsToStorageRatio": [ { "To": 0.0, "From": 0.0 } ], "StorageType": "gp2" }, { "StorageSize": [ { "Step": 1, "To": 6144, "From": 100 } ], "ProvisionedIops": [ { "Step": 1, "To": 40000, "From": 1000 } ], "IopsToStorageRatio": [ { "To": 50.0, "From": 1.0 } ], "StorageType": "io1" }, { "StorageSize": [ { "Step": 1, "To": 20, "From": 20 }, { "Step": 1, "To": 3072, "From": 22 } ], "ProvisionedIops": [ { "Step": 1, "To": 0, "From": 0 } ], "IopsToStorageRatio": [ { "To": 0.0, "From": 0.0 } ], "StorageType": "magnetic" } ] } }